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Why is the barometric height used as a u...

Why is the barometric height used as a unit to express the atmosphric pressure ?

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An altimeter is an aneroid barometer which makes use of the change in atmospheric pressure with the change in height above the sea level (altitude). What is the approximate value of atmospheric pressure at sea level in S.I unit?

An altimeter is an aneroid barometer which makes use of the change in atmospheric pressure with the change in height above the sea level (altitude). How does the atmospheric pressure change with increase in height above the sea level?

Why mercury is used in barometer for measuring atmospheric pressure?

Units of pressure are :

The S.I. unit of pressure is

Unit of lowering of vapour pressure is

What is the S.I unit of pressure?

What is the barometric height of a liquid of density 3.4 g cm^(-3) at a place, where that for mercury barometer is 70 cm?

How is the barometric height of a simple barometer affected if Its tube is pushed down into the trough of mercury?

Sl unit of pressure is newton.

ICSE-PRESSURE IN FLUIDS AND ATMOSPHERIC PRESSURE-Exercise -4(B)
  1. What is a barometer ? How is a simple barometer constructed ?

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  2. Explain how is the height of mercury column in the tube of a simple ba...

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  3. Illustrate with the help of a lebelled diagram of a simple barometer ...

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  4. Why is the barometric height used as a unit to express the atmosphric ...

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  5. What is meant by the statement “the atmospheric pressure at a place is...

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  6. How will you show that there is vacuum above the surface of mercury i...

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  7. How is the barometric height of a simple barometer affected if (a) i...

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  8. State two uses of a barometer.

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  9. State two advantages of use of mercury as a barometric liquid.

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  10. Water is not used as a barometeric liquid because :

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  11. Mention two demerits of a simple barometer and state how they are remo...

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  12. Draw a simple labelled diagram of a Fortin barometer and state how it ...

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  13. State two advantages of an aneroid barometer over a simple barometer.

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  14. How is the reading of a barometer affected when it is taken to (i) a ...

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  15. How does atmospheric pressure change with altitude ? Draw an approxima...

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  16. State two factors which affect the atmospheric pressure as we go up.

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  17. Why do ink pens start leaking at high altitudes?

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  18. Why does nose start bleeding on high mountains?

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  19. What is an altimeter ? State its principle. How is its scale calibrate...

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  20. What do the following indicate in a barometer regarding weather : (a...

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